These benefits translate into increased productivity and profitability.

Achor cites three main predictors of happiness: an optimistic mindset, social support, and the ability to see stress as a challenge instead of a threat.

He says his research has proven that employees with these characteristics generally are more successful than negative employees.“Happiness is the precursor to success—not really the result of it,” says Achor, who’ll address the America’s Credit Union Conference in San Diego (June 17-20). “One of the things we suggest to people is to stop saying, ‘I will be happy when [this or that] happens,’ because if we can find a way to become happier now, it raises our success rate of getting to that goal.”

Achor advises organizations to have employees do simple exercises to boost their happiness. These methods include things like journaling about positive experiences, consciously smiling more often, meditating, or having employees write quick emails to those in their social support networks.

Even the smallest behavioral changes can make a big difference, Achor says, citing a study in which the 1,100 employees at Oshner Health Systems took part in Achor’s “10-5 way” activity.

In this exercise, employees passing within 10 feet of someone made eye contact with the person and smiled. If they passed within five feet, they said hello.

As a result, the hospital experienced huge increases in employee engagement and happiness. Patients picked up on the positivity, Achor says, and were more likely to recommend the organization.

Engagement among doctors also improved—to the point that when offered higher-paying jobs elsewhere, they chose to remain at Oshner.